{"type":"rich","version":"1.0","title":"parabola task y=a(x-h)2 +k+rainbow","html":"<iframe src=\"https://www.desmos.com/calculator/cxqe5du0lk?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}